On the results of engineering geological research of loess-soil massifs of Northern Eurasia


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This paper reports on the total results obtained in solving morphological, retrospective, and engineering geological forecast tasks for loess-soil massifs. It is shown that the maximum relative subsidence ranges from 0.17 to 0.21, the thickness of subsiding loess massifs is 55 m under a natural load, the maximum number of cyclites composed of subsiding loess soils reaches ten, and more often the number of buried subsiding soils does not exceed four to five in a section of a loess massif. The main result in solving these retrospective engineering-geological tasks was the development of eight hypotheses and mechanisms of loess-soil subsidence, on the basis of which a general theory and four particular theories on the formation of loess subsidence were formulated. The result of solving the forecast tasks was the elaboration of methods for the calculation of the expected settlement of loess massifs under different conditions of wetting and the development of hydrogeochemical, geochemical, geotechnical, and integrated techniques for the improvement of the properties of loess-soil massifs.

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V. Trofimov

Department of Geology

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Email: trofimov@rector.msu.ru
俄罗斯联邦, Moscow, 119991

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